22
MCQ (Multiple Correct Answer)
Metallic elements are described by their standard electrode potential, fusion enthalpy, atomic size, etc. The alkali metals are characterised by which of the following properties?
A
High boiling point
B
High negative standard electrode potential
C
High density
D
Large atomic size
23
MCQ (Multiple Correct Answer)
Several sodium compounds find use in industries. Which of the following compounds are used for textile industry?
A
$\mathrm{Na}_2 \mathrm{CO}_3$
B
$\mathrm{NaHCO}_3$
C
NaOH
D
NaCl
24
MCQ (Multiple Correct Answer)
Which of the following compounds are readily soluble in water?
A
$\mathrm{BeSO}_4$
B
$\mathrm{MgSO}_4$
C
$\mathrm{BaSO}_4$
D
$\mathrm{SrSO}_4$
25
MCQ (Multiple Correct Answer)
When zeolite, which is hydrated sodium aluminium silicate is treated with hard water, the sodium ions are exchanged with which of the following ion(s)?
A
$\mathrm{H}^{+}$ ions
B
$\mathrm{Mg}^{2+}$ ions
C
$\mathrm{Ca}^{2+}$ ions
D
$\mathrm{SO}_4^{2-}$ ions
26
MCQ (Multiple Correct Answer)
Identify the correct formula of halides of alkaline earth metals from the following.
A
$\mathrm{BaCl}_2 \cdot 2 \mathrm{H}_2 \mathrm{O}$
B
$\mathrm{BaCl}_2 \cdot 4 \mathrm{H}_2 \mathrm{O}$
C
$\mathrm{CaCl}_2 \cdot 6 \mathrm{H}_2 \mathrm{O}$
D
$\mathrm{SrCl}_2 \cdot 4 \mathrm{H}_2 \mathrm{O}$